157539723 has 16 divisors (see below), whose sum is σ = 234026496. Its totient is φ = 93446240.

The previous prime is 157539709. The next prime is 157539751. The reversal of 157539723 is 327935751.

It is a cyclic number.

It is not a de Polignac number, because 157539723 - 2¹⁰ = 157538699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157539703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49236 + ... + 52337.

It is an arithmetic number, because the mean of its divisors is an integer number (14626656).

Almost surely, 2^157539723 is an apocalyptic number.

157539723 is a deficient number, since it is larger than the sum of its proper divisors (76486773).

157539723 is a wasteful number, since it uses less digits than its factorization.

157539723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101634.

The product of its digits is 198450, while the sum is 42.

The square root of 157539723 is about 12551.4829004385. The cubic root of 157539723 is about 540.0865464850.

The spelling of 157539723 in words is "one hundred fifty-seven million, five hundred thirty-nine thousand, seven hundred twenty-three".